Introduction to Basic Manufacturing Processes and ... - always yours

Welding 319
mains electricity supply is available. They have to step down the usual supply voltage (200-
400 volts) to the normal open circuit welding voltage (50-90 volts). The following factors
influence the selection of a power source:
1. Type of electrodes to be used and metals to be welded
2. Available power source (AC or DC)
3. Required output
4. Duty cycle
5. Efficiency
6. Initial costs and running costs
7. Available floor space
8. Versatility of equipment
Fig. 17.10 Electrode holder
Fig. 17.11 Earth clamp
Point
Handle
Chisel
Fig. 17.12 Hand screen
Fig. 17.13 Chipping and hammer
Handle
Fig. 17.14 Wire brush
Fig. 17.15 C-clamp